Material performance testing method

Abstract

The invention belongs to the technical field of material performance testing, and particularly relates to a material performance testing method, which is characterized in that a solution medium cup made of a polytetrafluoroethylene material is arranged on the inner wall of a stainless steel reaction kettle, a fixing frame is embedded in the medium cup, and a speed-adjustable rotating blade with a cross-shaped structure is mounted in the center of the stainless steel reaction kettle; a battery, a Bluetooth SOC, an ADC data collector and a signal conditioner are arranged in the outer upper portion of a stainless steel reaction kettle cover body, a material and a reference electrode are arranged in a guide groove of the fixing frame, wires of the material and the reference electrode penetrate through the stainless steel reaction cover body upwards through the guide groove and then are connected with a signal conditioner, experimental parameters are set according to requirements, a non-metallic material is subjected to corrosion performance test under the conditions of high and low temperature, high pressure, acid-base medium and different flow rates, and the metal material is subjected to corrosion performance and potential test under the conditions of high and low temperature, high pressure, acid-base medium and different flow rates. According to the method, the principle is scientific and reliable, and reliable evaluation data can be provided for material failure.

Description

Technical field: [0001] The invention belongs to the technical field of material performance testing, and in particular relates to a material performance testing method, which can realize acid and alkali erosion resistance performance testing of materials and / or wireless collection of multiple potentials in a reaction kettle. Background technique: [0002] With the development of the petroleum industry, the mining depth of coal, oil and natural gas wells has gradually deepened, and the underground and transportation conditions have become increasingly harsh. Temperature, pressure, corrosive media and scouring action can strongly attack the material, rendering it useless and causing further hazards. In order to check whether the material meets the requirements of complex working conditions and whether the scour environment under high and low temperature, high pressure and acid-base conditions is safe and reliable, it is necessary to test the material. The test of the open ci...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, stainless steel reactors are widely used due to their low price and good thermal conductivity. Stainless steel reactors generally contain insulation interlayers, oil bath heating layers and stainless steel layers. However, stainless steel materials have poor acid and alkali resistance, so, Chinese patent 201220543710.5 discloses a corrosion-resistant reaction kettle including an insulating interlayer, an oil bath heating layer, and a stainless steel layer. The stainless steel layer is covered with a PVDF polyvinylidene fluoride lining layer, which cannot test the erosion corrosion of the material, nor can it conduct potential test

Chinese Patent No. 200910135692.X discloses a method capable of simulating high temperature, high pressure and high H content 2 S / CO 2 The material corrosion evaluation test device for oil-water-gas multiphase corrosion medium pipe wall flow and erosion corrosion conditions mainly includes a high-temperature and high-pressure reactor with a rotating shaft, an impeller and a sleeve. A built-in bolt that rotates together. The lower end of the built-in bolt is threaded and can be connected with the impeller. A sleeve is arranged around the rotating shaft, and the sleeve is connected and fixed with the kettle cover through a rod; the built-in bolt is sleeved on the rotating shaft. , threaded connection with the rotating shaft; the impeller is an impeller with an airfoil, and the impeller has a guide cone above the blade, and the impeller and the built-in bolt are threaded; the size of the lower inlet of the sleeve is larger than that of the upper outlet, and the lower inlet size It matches the size of the impeller, and the lower end of the sleeve is flush with the lower end of the impeller; the upper end of the sleeve has a flange and the rod is connected by thread, and the rod and the kettle cover are connected by thread to clamp the sample The fixture and the flange at the upper end of the sleeve are connected by bolts; the method of simulating the actual flushing condition is to fix the fixture with the sample on the rotating shaft of the high-temperature and high-pressure reactor. Processing and installation have very high requirements. During the rotation of the shaft, the flow of the surrounding liquid medium will be disturbed, which will inevitably produce eddy current effects, which cannot guarantee the accurate control of the flow rate of the sample, and cannot test the potential performance of the material under scouring.

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